Gemini 2.5 Flash Preview (thinking)vsMercury 2.5 Preview
Mercury 2.5 Preview is cheaper than Gemini 2.5 Flash Preview (thinking) at $0.04/M vs $0.175/M input tokens.
| Spec | Gemini 2.5 Flash Preview (thinking) | Mercury 2.5 Preview |
|---|---|---|
| Input price | $0.175/M tokens | $0.04/M tokens |
| Output price | $3.5/M tokens | $0.15/M tokens |
| Context window | 1.0M tokens | 260K tokens |
| Free API (OpenRouter) | No | No |
| Released | Apr 2025 | Aug 2026 |
Our Verdict
Gemini 2.5 Flash Preview (thinking)
Mercury 2.5 Preview
Not enough votes to call it. On the specs, nothing separates them.
Mercury 2.5 Preview costs 23x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Gemini 2.5 Flash Preview (thinking)
Input
$0.17
Output
$3.50
Mercury 2.5 Preview
Input
$0.04
4.4× cheaper
Output
$0.15
23× cheaper
Mercury 2.5 Preview is cheaper on both: 4.4× input, 23× output.
Where to run it
1 host
Gemini 2.5 Flash Preview (thinking)
No hosts listed on OpenRouter.
Mercury 2.5 Preview1 host
Per million tokens. Prices and uptime via OpenRouter, checked 13 Sep 2026.
Writing DNA
Style Comparison
Similarity
42%
Mercury 2.5 Preview uses 78.7x more headings
Gemini 2.5 Flash Preview (thinking)
Mercury 2.5 Preview
53%Vocabulary65%
14wSentence Length14w
0.38Hedging0.44
4.4Bold4.9
4.1Lists3.3
0.00Emoji0.00
0.00Headings0.79
0.24Transitions0.20
Based on 7 + 26 text responses
Research
What we learned reading every model
FAQ
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